Disk talking-machine.



No. 778,543. PATENTED DEG.V27, 1904. J. LE MON 6L F. G. VON HEY'DEBRANDUND DER LASA.

DISK TALKING MACHINE.

APPLICATION FILED AUG. 15, 1902.

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UNITED STATES Patented December 27, 1904.

PATENT EETEE.

JAMES LE MON AND FERDINAND-CHRISTOPH VON HEYDEBRAND UND DER LASA, OF NEVYORK, N. Y.

DISK TALKING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 778,543, dated December2'?, 1904. l Application filed August l5, 1902. Serial Noi 119,774.

To @ZZ whom if mftg/ concern:

Be it known that we, JAMES LE MoN and FERDINAND CHRISTOPH voN HEYDEBRANDUND DER LAsA, citizens oi' the United States, and residents of New York,in the county of New York and State of New York, have invented certainnew and usei'ul Improvements in Disk Talking-Machines, of which thefollowing is a specification.

This invention relates to what are known as talking-machines of the diskvariety, such as the gramophone, Xonophone, Oolumbia, Victor, &c.

The object of this invention is to render said machines capable ofreproducing the sounds, both vocal and instrumental, recorded on thedisks or records with complete fidelity, accuracy, volume, andexpression.

The requisite uniformly-level rotation of the record is obtained byassuring the perpendicularity ot' the main carrying-plate spindle and soboxing' it in at its base as to prevent any tendencyT to lift whilerotating and giving the carrying-plate an increased gravity to annul itscentrifugal tendency to undulate at the periphery and -by properlysupporting the said heavy carrying-plate rig'idly upon itsdriving-spindle. The increased gravity oi the carrying-plate is obtainedby the addition to the present plate oiA a disk, plate, segment, ring orrings oi' (preferably) non-resonant material or metal, preferably lead,attached to or cast with or upon said carrying'- plate, or said platemay be made of an integral lead casting or sheet centrally bushed withathreaded bushing through which the spindle passes and is screwed in.

Then our invention is adapted to old machines with the usualcarrying-plate, the additional weight may be in a form of a disk ordisks, ring or rings, plate or plates, segment or segments, so attachedto either (preferably the "lower-U face of the present carryingplate asto cause a proper distribution oi' balance in same, or peripheral ringsor segments may be cast onto or attached to the said carrying-plate. Asregards the material used to increase the gravity of the carrying-platewe prefer to use lead on account of its great weight per area and itslack of resilience which prevents any vibration which may arise from theuse oi' resonant metal for this purpose. The gravity ot' thecarrying-plate may be increased up to any practical degree according tothe size of the instrument for the desired result. Any tendency whichthe main spindle which drives the rotating carrying-plate may have tolift while rotating is prevented by placing` an overhang cover on thestep-box in which the spindle-pivot revolves, the overhang in thestep-box cover forming contact with a shoulder made on the pivot toprevent its leaving the boX or rising beyond the lower face of theoverhang cover. This arrangement in combination with thegreatlyincreased gravity ot' the carryingplate prevents all ill effectsfrom radial centrifugal action or undulatory motion of thecarrying-plate and the record fastened thereon.

In the accompanying drawings, wherein our invention is shown as appliedto the carryingplate of a disk talking-machine as at present constructedby the addition of weight thereto and also to a new machine wherein thecarrying-plate is made originally or cast of suiicient weight, similarparts are always denoted by similar letters.

Figure l is a vertical section of the parts of theinstrument showingourinvention; Fig'. 2, a top plan of carrying-plate and spindle; Fig. 8,a bottom part of carrying-plate and boss; Fig'. 4, a vertical section ofupper end of spindle; Fig. 5, a vertical section of lower end ofspindle.

A indicates the carrying-plate for the diskrecord. Said carrying-plateis made heavier by the addition thereto of a disk or disks, plate orplates, ring' or rings, segment or segments, block or blocks a ot' apreferably nonresonant metallead, for instance--and is fitted with aninternally-threaded passage,

bushing, or socket a for the passage and attachment of spindle B. Theplate A has cast onto or afiixed to it on its under side a balancinginternally-tlneaded boss a2 to insure level rotation on spindle B, saidboss forming a vertical extension of plate A.

B indicates the driving-spindle for carryingand its threaded boss orextension and also a smaller threaded top portion of less diameter,

t', for the internally-threaded knob or clamp plate L2, which securesthe record to the VFace of the carrying-plate A, and said spindle B hasat its lower extremity a pivot (l, upon which it rotates.

C indicates the pivoted lower end olI driving-spindle B. This pivot isYformed of `greater diameter than the rest of the spindle above it, soas to term a shoulder o to prevent its lifting in the step-box D, and itlinishes at the extreme lower end in conc it'orm turned true toiit andwork in its step-bonY D.

D indicates the step-box for pivot of spindle B, having thereon anoverhang removable cover el, screwed to its upper end, to overhang theshoulder c on the pivot C, and thus prevent it from rising' in its stepwhile revolving.

E indicates the disk-record, containing the groove or music-track forthe reception and guidance of stylus K, actuated by soundbox L.

Having thus described our invention and the method of carrying same intoe'tl'ect, we claim as follows:

l. ln a disk talking-machine, a weighteddisk-record support, a verticalshat't upon which said support is mounted, boX-stepfor the lower end ofsaid shaft, and a cap Vl'or said box-step engaging said shaft toprevent-vertical movement ot' said shaft, as described.

Q. ln a disk talking-machine, a weighteddisk-record support, a shaftupon which the support is mounted, a supporting-disk beneath saidweighted disk and adjustable upon said shaft and clamping-cap to clampagainst the weighted-disk support.

3. ln a. disk talking-machine a weighteddisk record support, a verticalshaft upon which said support is mounted, the lower end ot' said shaltbeing litted with a shoulder and turning in a box-step and a cap toprevent vertical movement of said shaft.

4L. Vin a disk talking-machine, a weighteddisk-record support, avertical shaft upon which said support is mounted, the lower end of saidsha'i't being litted with a larger cylindrical portion terminating in aninverted cone forming a shouldered pivot and turning in a box-step and acap overhanging said shoulder and box-step to prevent vertical movementof said shaft, which said shaft is at its upper end properly threadedfor securing thereon the weighted-disk support, and a supporting-diskbeneath said weighted disk, and a clampingcap above said weighted diskfor clamping the music-record to the said weighted-diskrecord support.

Signed at New York, in the count5v of New York and State of New York,this lslth day of August, A. D. 1902.

JAMES LE MON. llllllDlNAND-CllltlS'llOPll VO IIEYDL'BRAND UND DER liASA.

lVitnesses:

A. J. DoNAGnY, Cuirs. J. HAMBURG.

